Measuring the electric dipole moment of the electron in BaF

By P. Aggarwal, H. Bethlem, A. Borschevsky, M. Denis, K. Esajas, Pi A. B. Haase, Y. Hao, S. Hoekstra, K. Jungmann, T. Meijknecht and 6 more. European Physical Journal D : Atomic, Molecular and Optical Physics, 2018

142 citations recorded by the source corpus.

We investigate the merits of a measurement of the permanent electric dipole moment of the electron (eEDM) with barium monofluoride molecules, thereby searching for phenomena of CP violation beyond those incorporated in the standard model (SM) of particle physics. Although the BaF molecule has a smaller enhancement factor in terms of the effective electric field than other molecules used in current studies (YbF, ThO and ThF+), we show that a competitive measurement is possible by combining Stark-deceleration, laser-cooling and an intense primary cold source of BaF molecules. With the long coherent interaction times obtainable in a cold beam of BaF, a sensitivity of 5 × 10−30 e⋅cm for an eEDM is feasible. We describe the rationale, the challenges and the experimental methods envisioned to achieve this target.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/ee684e0a4ff28842cc4938034e4fb18cdb2ed96c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. Igor G. Irastorza
2. G. Lanfranchi
3. D. Curtin
4. S. Knapen
5. M. Pospelov
6. J. Redondo

Citations in the corpus

• Physics beyond colliders at CERN: beyond the Standard Model working group report (2019, background): “Further improvements are expected soon from projects using these and also further molecules, such as YbF [152] and BaF [153].”